Certified value, µg∙g−1

Acceptance limits,

µg∙g−1

Cr(VI) by MPC-IC-MS/MS, µg∙g−1

Cr(VI) by DPC-UV-VIS,

µg∙g−1

Cr(VI) by SID-IC-MS/MS, µg∙g−1

NIST

551.2 ± 34.5a

-

612.1 ± 32.7a

494.0 ± 23.8a

-

Phenova

147

46.9 - 224b

139.1 ± 17.5a

108.0 ± 5.0a

-

Fluka

153 ± 6

56 - 250b

-

-

161 ± 6a